diff --git a/lib/src/WriterManager.cpp b/lib/src/WriterManager.cpp
index 428fa34..cfa8e91 100644
--- a/lib/src/WriterManager.cpp
+++ b/lib/src/WriterManager.cpp
@@ -48,15 +48,14 @@ void writer_utils::create_destination_folder(const string& output_file)
     }
 }
 
-WriterManager::WriterManager(const unordered_map<string, DATA_TYPE>& parameters_type, 
-    const string& output_file, uint64_t n_frames):
-        parameters_type(parameters_type), output_file(output_file), n_frames(n_frames), 
-        running_flag(true), killed_flag(false), n_received_frames(0), n_written_frames(0), n_lost_frames(0)
+WriterManager::WriterManager(const unordered_map<string, DATA_TYPE>& parameters_type):
+        parameters_type(parameters_type), running_flag(true), killed_flag(false), 
+        n_received_frames(0), n_written_frames(0), n_lost_frames(0)
 {
     #ifdef DEBUG_OUTPUT
         using namespace date;
         cout << "[" << std::chrono::system_clock::now() << "]";
-        cout << "[WriterManager::WriterManager] Writer manager for n_frames " << n_frames << endl;
+        cout << "[WriterManager::WriterManager] Writer manager initialized." << endl;
     #endif
 }
 
@@ -99,11 +98,6 @@ string WriterManager::get_status()
     }
 }
 
-string WriterManager::get_output_file() const
-{
-    return output_file;
-}
-
 unordered_map<string, uint64_t> WriterManager::get_statistics() const
 {
     unordered_map<string, uint64_t> result = {{"n_received_frames", n_received_frames.load()},
@@ -207,4 +201,4 @@ bool WriterManager::are_all_parameters_set()
 size_t WriterManager::get_n_frames()
 {
     return n_frames;
-}
\ No newline at end of file
+}
diff --git a/lib/src/WriterManager.hpp b/lib/src/WriterManager.hpp
index 111e790..e072a86 100644
--- a/lib/src/WriterManager.hpp
+++ b/lib/src/WriterManager.hpp
@@ -21,12 +21,9 @@ class WriterManager
 {
     
     std::unordered_map<std::string, boost::any> parameters = {};
-    std::mutex parameters_mutex;
 
     // Initialize in constructor.
     const std::unordered_map<std::string, DATA_TYPE>& parameters_type;
-    std::string output_file;
-    size_t n_frames;
     std::atomic_bool running_flag;
     std::atomic_bool killed_flag;
     std::atomic<uint64_t> n_received_frames;
@@ -34,27 +31,26 @@ class WriterManager
     std::atomic<uint64_t> n_lost_frames;
 
     public:
-        WriterManager(const std::unordered_map<std::string, DATA_TYPE>& parameters_type, const std::string& output_file, uint64_t n_frames=0);
+        WriterManager(const std::unordered_map<std::string, DATA_TYPE>& parameters_type);
         virtual ~WriterManager();
 
+        void start(const std::unordered_map<std::string, boost:any>& parameters);
+        const std::unordered_map<std::string, DATA_TYPE>& get_parameters_type() const;
         void stop();
         void kill();
+        std::string get_status();
+        std::unordered_map<std::string, uint64_t> get_statistics() const;
+
         bool is_running();
         bool is_killed() const;
-        std::string get_status();
         bool are_all_parameters_set();
         std::string get_output_file() const;
 
-        const std::unordered_map<std::string, DATA_TYPE>& get_parameters_type() const;
         std::unordered_map<std::string, boost::any> get_parameters();
-        void set_parameters(const std::unordered_map<std::string, boost::any>& new_parameters);
         
-        std::unordered_map<std::string, uint64_t> get_statistics() const;
         void received_frame(size_t frame_index);
         void written_frame(size_t frame_index);
         void lost_frame(size_t frame_index);
-
-        size_t get_n_frames();
 };
 
-#endif
\ No newline at end of file
+#endif